Burglar-alarm system



H. vW. VAIL.

BURGL'AR ALARM SYSTEM. APPLICATION FILED IuLYII. IsII.

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PILEETS-SHEET 3.

Patented Apn 12, 1921.

R. W. VAIL.

BUHGLAR ALARM SYSTEM. APPLICATION FILED JULYH. 191.1.

H. VV. VAL. BUBGLAR ALARM SYSTEM. APPLICAUON FILED JuLYH, |917.

I0 SHEETS-SHEET 5.

fR. w. vArL. BURGLAR ALA-RM SYSTEM.

APPLICATION FILED .F.ULY Il, 1917.

Patented Apr. 12, 1921.

10 SHEETS-SHEET 6 R. W. VAN..

BURGLAR ALARM SYSTEM. APPLICATION man JULY 11. 1917.2fjff-5:

` I0 SHEETS-SHEET 7- LL J E N @xx R. W. VAL. BURGLAR ALARM SYSTEM. APPLlc/moN minlnv/11.1917.

Patented Apr. 12, 1921.

10 SHEETS-SHEET 8. Q 425;

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R. W. VAIL. y BURGLAR ALARM SYSTEM.

APPLICATION FILED JULYII. 1917.

Patented Apr.y 12, 1921.,

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n rfi/1,91

R.W. V'AIL. BUBGLAR ALARM SYSTEM. I APPLICATION FILED IIILYII. IsII.

Patented Apr. 12, 192' l0 SHEETS--SHEET l0- mm IIII 54, I MII/m70# ROBERT W. vain, or NEW YORK, N. Y.

BURGLAR-ALARM SYSTEM.

Specification of Letters Patent.

Application led Julyill; 1917. Serial No. 179,864.

T 0 all whom t may concern:

Be it known that I, Roiinirr lV. VAIL, a. citizenv of the United States, residing at New York, in the county 'of New York and State of New York, have invented new and usei'ul Improvements in Burglar-Alarm Systems, of which the following. is a specification.

The object of my invention is to provide certain improvements upon the burglar alarm system disclosed in my latent No. 1,238,363 of August 2S, 1917, of which this is in part a continuation` and which relates to the protection ot banks, residences, vaults, etc., against robbery, and which` is also designed to prevent the escape ot convicts through windows, walls or doors of prisons, and which is arranged to sound an. alarm whenever the system is .tampered with in any way, or an attempt to escape past windows or doors protected by the system is made.

It is an especial object of my invention to provide a novel plate having a series of channels through which an endless traveling element passes; to arrange such channels through hinges of doors or shutters; to provide bars having similar channels; to provide other elements, such-as bent-plates, .pulleys and screws ete., with oriices through which an endless cable may travel to ncrease. the security of the burglar alarm system, without interfering with the functions ot' the various members through which it travels.

lt is further my object to coordinate such an alarm system with clocks which may be adjusted to prevent the sounding or' the alarm at predetermined times.

lt is tui-ther my object to diversify the arrangement o endless chains and endless cables and to arrange them. in a connected series. thatA is, with two or more individual endless chains or cables operatively connected together, one ot' the endless chains or cables not being directly connected with the propelling apparatus, but caused to be actuated by the action ot' the tirsteiidless element and a connecting medium to permit of a more diversified arrangement ot' the burglar alarm system, and to make it impossible V to tamper with it withoutv sounding` the alarm.

lt isifurther my object to provide a 'novel arrangement of chains as a part ot the burglar alarm system. It is also my object tol use a series of individual endless elements proyedl arrangement ot individual endless chains iii series in order that thev chains when worn may be readily replaced and maybe readily assembled.

lt is also my object to.l provide fahne-vel. hollow axle in conjunction with grooved and,

Patented Alliillt,

It is also object tor provide anim? chain *wheels over which pass the protective endless cords and chains; the endlesselements operating through the hollow axles whereby the burglar alarm system maybe more effectively applied tofdoors or hinged windows or to any form ot protective plate or" this system, and which arrangement will render it impossible to remove the said" grooved and chain `wheels anda dOOi for.' 75

window without sounding thel burglar alarm. It is'iiirther my object tovprovide .a bur'- tinuoiis endless element running through the entire protective system and to `make ini.

-glar alarm system having a seriesof indi-U vidiial endless elements instead of one coiiv-` possible successful ,tampering witligsuch. a

burglar alarm system by forming a part oi the apparatus y lt is also my ob]ect to provide novelf. ar.

rangements of protective plates oi' any suitable material n connection with thea-larin traveling element (or.. .A

i-.plates` y which may be ot steel, glass or other nia-' A system, the lendless elements) being 4guided through apertures extending through such plate or when the endless element is passing throughv them and in operation.

It is further my object touse.` suclitlocl;l i

guiding the endless traveling elements through the hollow axles. or gears, chain wheels, Aor grooveld: wheels roo ing boxes to support a guide .wheelwithinm y the compartment to guide the endless travel ing element. It is also my object to provide a protective plate made or arranged in sections which may be used collectively or individually and in correlation with the easements set `forth in my Patent N o. 1,238,363.

Further, my object is toprovide anovel pronged device arranged adjacent to the endless traveling chain to cause its stoppage in the event of an slack occurring in it, as a result of tampering with the apparatus.

It is further my object to provide novel time regulating apparatus for controlling, stopping, or starting the operation of the system at predetermined hours.

It is further my object to provide novel combinationl and arrangement of parts as will hereinafter be fully set forth with the accompanying drawings illustrating the in vention, in which:

Figure l is a vertical section through one form of protective plate in combination with my endless traveling element;

Fig. 2 is a vertical cross section of another form of protective plate having a series of apertures and through which are operated both endless chains and endless cables;

Fig. 3 is avertical section of another form of protective plate having both horizontal and vertical apertures for the passage of the endless traveling elements; Fig. 4 is a 4horizontal transverse section through Fig. 3 ;k

Fig. 5 is a vertical longitudinal section of a modified protective plate;

Fig. 6 is a front elevation of Fig. 5;

F ig. is a vertical longitudinal section of a further modified protective plate, prefer-- ably of glass, the cable sheaves being arranged in a separate frame;

Fig. 8 is a horizontal transverse section through one form oit protective plate, showing`the oriiced screws, to prevent removal;

4ig. 9 is a detailed view of one of my apertured screws; f.

Fig. 10 is a front elevation, partly in sec tion, of a window protected by novel apertured bars, through which the endless traveling element passes;

Fig. 11 is a vertical section through Fig. 10;

Fig. 12 is a longitudinal section through a modified type of protective bar;l

Fig. 13 is a horizontal section on lin 13--13 of Fig. 10;

Fig. 14 is a vertical section of van improved arrangement of my invention, Athe easement being protected against removal; f

Fig. 15 is a section, partly in elevation, of my locking box;

Fig. 16 is a section of thelocking boX showing the use of both chain and cable;

gevaar-st Fig. 17 is a front elevation of a locking box;

Fig. 18 is a section of my locking box;

Fig. 19 is a vertical section o'j the rangement of the protective system which an endless cable travels through thc hollow axleso guide wheels to provide an auxiliary locking system;

Fig. 2Q is a horizontalv section of F online 20-2O of Fig. 19;

Fig. l2l is a front elevation, partly in section of an arrangement of the system in which the endless cable travels both vertically and horizontally through a protective bar;

Fig. 22 is a vertical elevation, partly in section showing a form of the 'invention having an elongated locking boni;

'227-27 of Fig. 28;

Fig. 28 is a vertical section on line 28?23 of Fig. 27 5 Fig. 29 is a front elevation of means whereby the system may be rendered inl erative automatically a predeterinii" d time;

Fig. 30 is a side elevation of an automatic switch for putting the system temporarily out of operation; e

Fig. 31 is a diagrammatic view, partly in elevation of a series ot' O'overnor-controlled f alarms;

Fig. 31A isa diagrammatic representatici'i of electrical controlling means for the bell P shown in Fig. 31;

Fig. 31B is a diagrammatic representatici:

ot' mechanical controlling'means for the' bell 65P shown in Fig. 31;

Fig. 32 is a detail cf a modified timing means whereby the whole system may be rendered` inoperative at a predetermined time;

Fig. 33 is a detail of a vertical slidable lswitch-block shown. in Fig. 32;

Fig. 34 is a diagram, Jartly in section and partly in elevation, of the system arranged to protect a door; d

Fig. 35 is an enlarged iragmentaryelevation, partly in section of a combined end-- less chain and endless cable protective arrangement;

Fig. 36 is a section 4on 'line 36-.36 ci? Fig. 35;

Fig. 37 is a view of the governor mecha- ECG nism partly in elevation and partly in section in combination with an endless chain system, shown in diagram;

Fig. 38 is a vieiv of a modilied form ot a vault compartment .protected by my alarm system; l

Fig. i4 is arsection through the floor or' ceiling of the 7ault; v `f Fig. 45 is a detail supporting means for Fig. 46 is a section showing the castings and tastenings used in the vault;

Fig. l? is a front elevation partly insec` tion of a system arranged to protect vault;

Fig. 4S

line 50450 or with the device Jfor providingV slack cable to permit an authorized person to open the Window Fig. 53 is a horizontal section on line 53-53 of Fig. 52; y i

Fig. 54 is a horizontal section on line 5111-54 of Fig. 52;

Fig. 55 is a diagrammatic illustration of the invention arranged to protect aseries of `windows Fig. 56 is a front elevation ot my compensating' device;

Fig. 5l is a vertical section of Fig. 56;' Fig. 5S is a horizontal section Online 58-58 of Fig. 56; j Fig. is a horizontal sectionon line 59-59 oi' Fig. 5G;

Fig. (il) is a view partly in elevation and partly in section on line 5G-56 of Fig. 61;`

Fig. 61 is a detailed elevation ot the slotted adjusting device;

Fig. 62 is a modified torni 'ot' protective plate in `wmbination with pulley support- .ing easements; 'L' i an enlarged rear vieiv ot door y Referring to yI provide an endless l 'may providea plate e of any or easement cover of a modified form ot" the rollers oripulleys;

" 'ment by screw-11.

. is a section partly in diagram ot` the system employing a novel entanglement the channeled glass plate plate which is secured tol 'utilizing aperture or Fig. G4 is adiagrammatic vieiv shown in section and in elevation ot' iii-.y invention applied to a building.

- Like characters oi' reference designate like parts throughout the various vievfs.

the accompanying drawings traveling element l and pulleys 2 supported by axles 3. To in `crease the usefulness oit my 'alarm system l suitable material such as glass or metal through 'which -the endless traveling elementl may travel in -longitudinal channels ablyA in )arallel arrangement as shown in Fig. 1. late t has a cut away portion or pocket G at each end in which the pulleys 2 are mounted as shou'nin Fig. 1.

In Fig2 there is illustrated a top plate 7 having a concealed tin ger `l0 Whichserves asa securing member.' The plate is secured to the body of the case In addition to the roll ers 2l Vmay also provide sprocket wheels 9 so that' both'en'dless chains and endless eadisposed prefer bles'may be used in the system or inany of U-shape vand areI provided with covers;

15. 1n this figure are illustrated small'roll-y ers 18 mounted within easement 1T asfi'llustrated. Pulleys 19, shown in dottedv lines are Jior a secondary protective .endless trav-5 cling member 14.

In Fig. 6 there is illustrated a 'trout plate or 4cover 21 for a-Windou'. l may provide apertures 2O of any suitable shapein this cover member to facilitate the assembling and adjustment of the cablel especially in connection with the apertured screw These apertures 2O may be Otany suitable size so as to admit a tool, or it desired. the hand. Lateral pairs of perforations 2li are provided for the attachment ot any form ot hinges it protective plate isused as a pro:- tective shutter. Y

In' Fig. 7 a modilied Vform otprotective Windouv construction is shown. comprising 2st, and theclianneled U-shaped plate 126 by a concealed screw. Iii-Fig. S the method vot utilizing screws 22de illustrated."tlie screws extending into the' wall 27.' rlhe endless cable .may through the aperture 23 .in the screw' by and hori- 1' vertt be inserted by first threading the cable through the screw andcoiling it about the screw a sufficient number oftimes so that it will unwind as desired as the screw is put inl place.

In Fig; 10 there is `illustrated a novel .means of protecting a window by my system by utilizing bars 28 having apertures 29 through which the endless cable 1 travels. Bars 28 are secured tot the window Vsash `or frame by means of fillets 31. The

`U-shaped form of the frame 30 is illustrated in Fig. ll.

Fig. 12 -illustrates a modified form of protective bar having a longitudinal channel 33 for the endless cable 1 and a plurality Vof transverse channels 29 to accommodate f and having anovel arrangement o f pulleys 2 and 18 .asillustrated yLocking box 34- is secured by suitable screws 36 or similar vfasl tening means. Hidden from view -by the locking boX are concealed screws 35. It is within the contemplation of my. invention to provide these screws with longitudinal channels and to carry the endless cable through them if desired.

In Figs. 15, 16, 17, and 18 is inustrated the locking block 37 within which the combining locking block'39 is positioned both of .these blocks'being provided with` suitable channels for the endless traveling element or elements.' An endless chain 38 mounted on .a sprocketwheel 9 may constitute one of the endless traveling elements.

vIn Fig. 19 is illustrated a novel vapertured pulley 41 arrangedl to permit a secondary cable 1 to pass through the aperture 1n the pulley while the primary cable 1 travels over its periphery.v I

'i F ig; 20v illustrates method of vmounting pulleys41 and 18 and the arrangement of the traveling element 1a.

In Fig. 21 there isillustrated a vertical strut 42 which serves as a mounting means for bars 32.I v 1 In Figs. 22, 23, and 24 isillustrated an elongated llocking boX `43 from which the endless cable 1 travels throughthe horizontal channel 44. rPhe elongatedlocking box is preferably heldin' place by screws 35 as shown in Fig. 24.

lIn Fig. 25 is illustrated aclock and an the concealed alarm dlsengaging mechanism comprising clock 45, ratchet 46, pawl 47 and sheave 48 to which is attached the stationary cable 49. Fi 26is'y a front elevation of clock 45 may be of any suitable variety. Attached to clock 45 as shown in Fig. 26 is an auxiliary tauty cable 73.

Fig. 27 illustrates in detail the novel rotatabledisk l50 which is provided with apertures 52 and which is normally held in the position shown by means of spring 127 to permit of the completing of an electric circuit and the sounding of analarmwhen the governor weightdrops as a result of an interruption of the usualoperation of the travcling` cable.

Disk 50 is rotatably mounted on the stationary disk 51. Attached to the rotatable disk 50Ais a line 72, secured to the taut cable 49, which in turn is connected with. a clock 45. Line 72 is guided over roller 130 as shown in Figs. 27 and 30.

In Fig. 28 the function of rotatable insulated disk 50 is clearly shown. When the4 governor weights 64, shown in Fig. 31, lower. the pivot arms 59, revoluble governor disk to which they are attached and the vertical movable plate 57 are lowered by arms 58, and guided in grooves 54, by governor frame A55 the contact points 128 carried by plate 57 will pass through the apertures52 in the insulated disk 50 to make the electric contact 'in the usual way with corresponding contact posts v56. But when disk 50 is rotated by clock 45 .the aiarm mechanism of which is set for any predetermined time so as to close the apertures 129 in the stationary disk 5l, the electric cont-act points v128 are prevented from' making contact with contact posts 56 and the alarm is prevented from sounding until th'e disk v50 is released and allowed to rotate to its normal position by the release of tension on cable 49 by clock 45. 61 designates the central guide post of the ygovernor frame. Fig. 30 is a side elevational view of the mechanism shown in Fig. 28.

In Fig. 29 I have illustrated diagrammatically a suitable switch 62 arranged to engage the stationary cable 49 and also a spring 63 which may be employed to cause the cable 49 t0 return to its normal position when released by switch 62.

Fig. 29 discloses an automatic clock device connected with electric motor 62 to stop motor by disconnectin the current at any predetermined time' w en the alarm clock mechanism (of ordinary type) is set to turn winding wheel 48 (see *ig 25) causing lever a@ of switch 62 to be drawn toward clock 45 to stop motor and simultaneously stopping the travel of the endless element 1.

signed prlmarily to automatically function in an unpeopled locked'oliice or safety vault;

the clock action which stops motor occurring sayfive minutes before the office isha-bitually opened in the morning. 4At the time the ofiice is locked for the night the endless system 1 is not of course operating in an ofiice. 'which has 'been peopled| during the day.

When the oiiice door is closed and locked the l or normal y normal. movement of endless element 1 com# mences and continues until automatically stopped at any predetermined hour in the morning, as above 'filescribed` lvl/*hen the office door is closed andlocked tor the night,

the switch string 49 (Fig. 29) in. grooves ot lguide rollers v4000, suitably attixed to walls or other support passes from the oilice room yor rooms to hall box 97 (see Fig. 39), when `the cable 49 can be reached to be pulled by hand, causing the movement of motor lever .rj in direction' ot arrow e, thereby turning on the electric current and causing motor to operate and simultaneously starting the travel of endless element l, which action continues during the night and until the motor is automatically stopped inthe morning, as above described. i

Fig. 31 isa diagrammatic view of an arrangement ot governors in series, the iirst of the governing mechanisms being designated as A; the second as B, and theA third in the series as C. In connection withthis series arrangement otgovernors l provide stationary cable 49 mounted on rollers 48 and secured by spring 63 to fastening D. Lines T2",operatively connect the several governor mechanisms with stationary cable 49 which in turn is connected with a clock 45. `Clock 45 is connected by auxiliary stationary cable 73 with removable pin 66. Pin 6G is releasably inserted through block 67 into the vertically. slidable plate 69. As shown in Fig.' 33, plate 69 is an intermediate plate provided with apertures 68 which permit of longitudinal sliding movement ot plate 69 when pin 66 is withdrawn. The dropping or lowering o'f plate 69 gives slack to cable72 and thus to member 84 and endlessl cable 1, thereby obviating the sounding ot the alarm bell p, at the time or" opening in the morning` the office or building in which the system is installed, when the nor- `mal operation of the alarm by the opening of the ydoor by the proprietor or employee would be a source oi" annoyance. The Weight ot' plate 67 is such that it does not act to sound alarm 651.

Bell 65P corresponds in function with bell 118 of applicants Patent No. 1.238363, and may be either a conventional mechanical bell (as shown in Fig. 31B) or a conventional electric bell (as shown in Fig. 31A). Alarm bell 65W. 65X, G5Y, and G5Z are conventional electric bells, as in a'pplicants .Patent No. 1,238,363, andare suitably Wired to battery 71, and areI sounded when any of the parallel strands of "the traveling element 1 are tamperedwvith or pushed out oftheir line direction'iof travel.

Referring to Fig. .3land 31B, cable 7 2 is attached to a gong-sounding member 600, which either releases av mechanically .sounded alarm bell, as in Fig. 31B. or closes thecircuit ot a conventional electric alarm bell, as inv Fig. 31A.'V Any suitable electrical or mechanical gong may be utilized. Alarm bell 65X, 65", 652, and 65.V are the ordinary conventional type ot electric bell or gong, andthe complete circuits are disclosed in Fig. 3l ot the drawings.

F 32 is an enlarged view of members 60, 67, G9. Fig is a detail view of member 69 which is provided with slots 70 through'which guiding pins 68 project, to engage in switch block 6T.

In Fig. 34, door 74 which is protected by my alarm mechanism, is provided with a novel channeled hinge 75, through which cablel travels, thus rendering it impossible to remove the door without sounding the alarm.

Fig. 35 illustrates means for operating a combined endless cable and endless chain as a protective device `tor a window or a Wall. l provide suitable adjustable frames torsupporting rollers 2 and sprocket Wheels v9. I also provide a hollow axle 7 9 for roller 2 and sprocket wheel 9. This axle affords a passage for auxiliary cable l, thus rendering it impossible to alter the mechanism with'- out sounding the alarm.

' To facilitate adjustment of frame 76 I provide slots arranged in the Jform of a cross to permit of adjustment either longitudinally or laterally.

Fig. 3G illustrates beveled gears 181 and their'arrangement for operating chain 38 so as to protect a door or Window.

Fig. 37 illustrates a means 'for connecting the endless chain 38 with the spindle 61 of governor trame 55, consisting of a combined sprocket wheel and gear 80 meshing with pinion 81, which latter member is carried by post oi spindle 61. The sprocket teeth-otl member 80 mesh. with chain 38, the gear .80 being driven by the endless chain.

Fig. 38 illustrates a governor operated alarm including a visible alarm and a det- .onating alarm device.

'The detonating alarm consists of a percussion cap 8T mounted in the barrel 88, the percussion cap being detonated by spring actuated hammer 86 which is released by trigger 85 when the extended arm 84 carried by the vertically movable member 57 of the governor is lowered following` an interference with the endless traveling element which normally results from any tampering with the system. The governor Weights 64 are pivotally attached to the stationary plate 125 by arms `124. YVeights 64 are also pivotally .connected with the vertically movable member 57 by the arms 59. The visible alarm device isl operated by means of an insulated member 83 carried by a vertically movable governor plate 57. Member 83 is adapted tov make or break the electric circuit between one of the electricv socket of lamp 91 to complete the electric- Circuit. Lamp 91-is provided with a darkened or reiiector' portion 92, whereby an in- .termittently flashing light is obtained which cannot `tail to attract attention when the alarm is operated. Member ,80 may oper-4 atively engage cable 1, as illustrated, as well as chain 38. Cable 1 maybe `operatively connected to compensating weights 82.

F ig. 39 which is an enlarged and reversed View of door 7 4 illustrates means for providing slack to enable authorized persons to enter without sounding the alarm. This result is attained by giving slack to cables 96 which are normally secured by rings to suitable hooks 99, this vmechanism being contained within a` suitable case locked when desired.

Figs. 40, 41.` 42, 43, 44, 45, and 46, illus trate details of a vault to which my protec tive alarm system is applied. Fig. 40 shows one means of mounting rollers 2. Fig.

.illustrates another method of mounting rollers 2, by means of bars 126.

j Fig. 41 illustrates means for mounting the casements which contain the rollers and sprocket wheels for the endless traveling elements.

The protective plates of vault are provided with flanges 100, which are suitably fixed to central vault frames 101. Figs. 42

and 43 illustrate` a 'protected compartment of the' vault. Fig. 44 shows a modified form oi vault. wall. Fig. 46 illustrates the squareshaped supports101 which are fastened to projections 100 of vault walls 103, this being my preferred form of vault construction. Fig. 47 shows the front plate of the vault and the disposition' of the traveling element. Fig. 48 illustrates an entanglement 'box 104 having inwardly projecting prongs adapted to engage and stop the traveling element inthe event that there is slack as the resultyof tampering or interfering with its usual operation. This entanglement box 104 isespccially ,designed for use where an endless cliain is employed as thetravcling element."

Figs. 49, 50 and 51 illustrate theentanglementboxjin detail. l y In Fig. 52 are illustrated Window sashes 10.6f mounted in main sash frame 107.' The vglass panes 111 are provided with channels f `112 for the traveling element v1. 108 desig- .nates af reciprocable, slack giving pulley which is operatively connectedto the knob 110, which is slidably mounted in the ,slot- 97, which may beframes in place. 114 designates the bottom f bar. whichlocks the main trarne in place, bar 114 being secured `by locking pin 113. F 1g. 55 shows a means forl mounting an endless traveling cable or endless traveling chain to protect a series oit' windows. Figs. 56, 57, 5,8, 59 illustrate operating weights 115 to which are mounted pulleys 2 tor the l endless cable'l. In the guiding trame 121 is mounted an actuated bar 116 having inclined projections or lugs 117 positioned to engage corresponding lugs 118 carried by weight 115. A spring 1.19 bears against head 120 ofbar 116 to cause it te move outwardly and disengage lugs 111'v from lugs 118, at a predetermined time as controlled by clock 4 In the arrangement of the compensating device illustrated in lthese figures single endless element passes through the compensating device twice over the `pulleys 2.

"When a door is opened the 'weights y115 are lifted simultaneously. Members 115 are ot' a suiiicient Weight so that the tension oi the endless element will not raise them in consequence of the ordinary fluctuation ot the ordinary motor action.

Figs. 56, 57,58 and 59 relate to the adjustment of burglar alarm parts to operative position after the ofiice door is closed and locked for the night. v .Rod 116 (Figs. 56, 59) locks weights 115 in operative position after the upper rod'fFigs. 5 6." 58) has been moved in the required direction. allowing weights 115 to drop to locked position beneath the projection oi rod 116. The upper rod is thus moved by pulling attached string c, c being guided to hall box (Fig.A

39) from room through-apertrues and into box 97 where it can be reached at any time and after oiiice door or vault or dwelling house door is closed and locked. (See Fig. 34.) Weights 115 rise when door is opened and during the day would be pinned in a fixed elevated position to remain immovable during the 4opening and closing of door. The slack of element 1 or the movability of weights 115 permits the ordinary opening of door during business hours, without braking the element 1. Before and after the oiiice door is closed and locked for the night weights 115 are supported in unlocked position-unlocked in the sense that weights 1115 canbe raised-by the reopening of the door before string c is pulled. They are dropped'to locked position `(in the sens@ ice l; at box 97 (Fig. of attached clock set for and operating at a predetermined,timeI .'(a given hour in the the winding wheel 48, ywinding the string a9v around e8 and drawor so after thesaidpredetermined time in that Weights 115 cannot be raised upon reopeningthe door)` by drawing the string c The alarm mechanism morning)` revolves ing rod lltowardclock 15` and drawing the projectionof 11G from aboveprojection ioA of 1,15*,so that members 115 are unlocked and rise nninipedeth when the office, vault or ,otlierdoor` is ordinarily opened a moment the morning. In. the case of` a burglar attemptingfto vopen a door protected by this apparatus, the'lendless traveling element 1 i would be brokenl and the alarm sounded.

The weigh'tsll with vtheir correlative ap# paratns are intimately associated with `the sounding'of the alarms throughl the operationof the endless element and'alarm mechf door is opened by shown.l

`anism. "Weights 115 in locked position refuse slack to elementl, sok that when the the `burglar element 1 isbroken, the governors are-affected and the alarms duly sounded. l Y Figs. GO and 61 show-the method of ad! justing members 76 and 78, by means V0f bolt 122 which engages `in'the slots 77. Figs.

62 and G3 show novel yeasement members 123 mounted `in" a ,protective members 123" containing `glass plate 111, t e 'pulleys' 2 as Fig. 64 illustrates various modifications of the protective apparatu'sapplied to a building.

v The operation of the invention has been set foith in connection with the foregoing description ofthe construction disclosed in the v views described. The'lcable "1 is continuously traveling and as itis taut, any stretching or movement out of its regular path will exert such tension on the alarm mechanism as to reduce the speed of the governor, close fthe switch,- and thus sound fthe alarm in consequence of the closing of `the switch. It is within the contemplation a/chain or a wire as the continuously of my invention to provide `either a cable,

traveling element, and the words traveling element when used in the claims are to be construed vas referring to any of the foregoing members. It is also within the contemplation'of my invention to provide any suitable form of incasing mechanism for the The drawings further 'provide any suitable form of grooved roller or wheel for mountingand supporting the cables or chains, and the word roller as used in the claims shall be construed as ap.- plying to any suitable rotatable element adapted to support the I may provide suitable weights 115 in contraveling element .v

flongitraveling el,enie'nt,"aiid similarlyto comlensate for ther diminishedweight by its subtraetionsif an extra short traveling element *is y'eni'ploy'ed, thus Qkeepii'ig the 'endless traveling element taut ythroughout its length. Any separation or movement of theliarallel lengths'of :the endless'cable at f any angie to their line of travel in even a sligl'it'degree 7 5 will sufficiently retard the goi-er'n'oras to cause vthe alarm to be sounded. 1

The words securing element when used in the claims are to be construed as referring to any hinge,`bolt, screw, bar, block, plate, or the like used as a fastening or protecting member and having a channel for the passage of the endless traveling element'.

The terms locking box and vlocking block are tobe applied to the device 'hereinbefore illustrated and described by these names.

It is lto be understood that I may modify the invention by arranging any of the mechanisms describedin series instead of usingthem singly, and that it is within the contemplation of my invention to modify the shape, position, and number of parts lused foror in connection'with an opening or other portion of a structure to be protected, as I mayelect.

It is also to be understood that it is within the contemplation of my invention to combine the use of an endless chain with an endless cable to increase the Vdifficulties of successful tampering with the svstem.

The words protective platevas used in the claims are to be construed as applying to a plate of any material, whether glass, metal or otherwise, and to a plate of any desired shape used for protective purposes in connection with an endless traveling element. The term protective member7 is to be construed asapplied to walls` plates, bars, rods and pipes. n

That I claim is: f

1. In a burglar alarm system. the combination of an endless traveling element and a securing member having a channel through which the endless traveling element passes.

2. In a burglar alarm'system the combination of one or more protective plates arranged to protect a given portion of a structure, the plates having channels, and endless traveling `elements passing through the aforesaid channels. f

3. In a burglar alarm system the combination of a protective member arranged to protect a portion of a structure and having transversely disposed channels and one or more traveling elements passing through the aforesaid channels.

4. In a burglar alarm system a protective device comprising aV member supporting a shaped in cross section and positioned Within the first named member, the `members having alined channels and one or more endless traveling elements passing through `the aforesaid channels..

5. In a burglar alarm system a.protective device comprising a member supporting a locking'block, a locking block member U- shaped in cross section and positioned Within'the first named member, the membersl having alined channels, one or more endless traveling elements passing through the aforesaid Channels, and vlocking blo'ck fastening'means. v

6. In a burglar alarm system an endless travelingelement, pulleys over which they endless traveling element passes, and an-` other. set of pulleys having hollon7 axles through Which a second .endless traveling element passes to prevent their' displacement Without sounding the alarm. y 7.- In a burglar alarm system the cor-nbination of an endless chain, an audible alarm,

a governor device, land means operatively connecting the governor device with. the endless 'chain, saidy means lcomprising a combined gear and sprocket member, a sprocket member engaging the chain, a pinion engaging. the aforesaid gear, a rod to WhichV the pinion is 'mounted and Which is opera.

tively engaged to the governor. l

8. In a burglar alarma combination of A endless chains and endless cables, pulleys and sprocket Wheels supporting the aforesaid endless-chains and endless cables and an adjustable frame `to which., the aforesaid pulleys and Vsprocket Wheels are mounted.

9.- ln a burglaralarm a combination of endless chains and endless cables, pulleys, and sprocket Wheels supporting the aforesaid endless chains and endless cables and an adjustable frame to which `the aforesaid pulleys and sprocket vWheels are mounted, the frame being laterally and longitudinally adjustable relative to the Wall to which the frame is mounted and having a fastening member positioned Within X-shaped slots to:

permit of adjustment described. 10. In a burglar alarm system the combination of an endless traveling chain and one or more entanglement boXes having opposite inwardly turned prongs positioned in .proximity to tliechains, whereby the movement of the chain Will be abruptly stopped by the prongs ifthe chain becomes slack in conse uence of tampering.

11. n a burglar alarm system the combiy geraete nation 'of one or more endless traveling' elementsarranged lto sound an alarm if their movement is interrupted, agovernor.y mechanism, and an audible alarm,fthe audible alarm beingset in operation by the governor mechanism When the movement ofthe endless cable is interrupted. M j l 12. In a burglaralarrn systemthecombination of one or more endless traveling elements arrangedto` sound an alarm if their vmovement is interrupted, a governor device,

; said means.

14, In a burglar alarm system the combi- In a burglar `alarmsystem an endless.l

nation With an endless traveling element adapted to sound an alarm, cfa ygovernor operated by the endless cable, means adapted to electrically connect the governor withtlie alarm upon interruption of the movement of the cable, and means for preventing such electrical connection to defer the sounding v of the alarmto a predetermined period, the

last named means comprising a spring controlled insulating disk .having orilices,vand

a clock to" Which the aforesaid rotatable disk is operatively connected and by which it is released at the desiredftime to permit of electrical connection .between the governor device and the signal devicebeing made through the oriliced portionsof `the rotatable disk substantially as illustrated.

l5. Ina burglar alarm system, an endless traveling element,'alarm bells arranged to be sounded when the customary movement of the endless traveling element is interrupted, a clock, a stationary cable connectedthereto, an auxiliary stationary cable, said cable being connected to the clock andto theA hereinafter' described pin, a slidable plate, an l alarm to which said slidable plate is attached, `a pin removably engaging said slidable 'plate to prevent its movementrand to thereby control the sounding of the 1 alarm until released bythe clock ata desired time.

. ROBERT W. VAIL. 

